diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0426-Maxim-MAX98357A-I2S-DAC-overlay-2935.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.19/950-0426-Maxim-MAX98357A-I2S-DAC-overlay-2935.patch | 130 |
1 files changed, 0 insertions, 130 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0426-Maxim-MAX98357A-I2S-DAC-overlay-2935.patch b/target/linux/brcm2708/patches-4.19/950-0426-Maxim-MAX98357A-I2S-DAC-overlay-2935.patch deleted file mode 100644 index af540cd836..0000000000 --- a/target/linux/brcm2708/patches-4.19/950-0426-Maxim-MAX98357A-I2S-DAC-overlay-2935.patch +++ /dev/null @@ -1,130 +0,0 @@ -From a1e9cfcbdb2182c6b9ee86403f2000907ff56d26 Mon Sep 17 00:00:00 2001 -From: wavelet2 <20504977+wavelet2@users.noreply.github.com> -Date: Mon, 15 Apr 2019 10:00:20 +0100 -Subject: [PATCH 426/773] Maxim MAX98357A I2S DAC overlay (#2935) - -Add overlay for Maxim MAX98357A I2S DAC. - -Signed-off-by: Richard Steedman <richard.steedman@gmail.com> ---- - arch/arm/boot/dts/overlays/Makefile | 1 + - arch/arm/boot/dts/overlays/README | 9 ++ - .../boot/dts/overlays/max98357a-overlay.dts | 84 +++++++++++++++++++ - 3 files changed, 94 insertions(+) - create mode 100644 arch/arm/boot/dts/overlays/max98357a-overlay.dts - ---- a/arch/arm/boot/dts/overlays/Makefile -+++ b/arch/arm/boot/dts/overlays/Makefile -@@ -75,6 +75,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \ - justboom-dac.dtbo \ - justboom-digi.dtbo \ - ltc294x.dtbo \ -+ max98357a.dtbo \ - mbed-dac.dtbo \ - mcp23017.dtbo \ - mcp23s17.dtbo \ ---- a/arch/arm/boot/dts/overlays/README -+++ b/arch/arm/boot/dts/overlays/README -@@ -1276,6 +1276,15 @@ Params: ltc2941 Select t - See the datasheet for more information. - - -+Name: max98357a -+Info: Configures the Maxim MAX98357A I2S DAC -+Load: dtoverlay=max98357a,<param>=<val> -+Params: no-sdmode Driver does not manage the state of the DAC's -+ SD_MODE pin (i.e. chip is always on). -+ sdmode-pin integer, GPIO pin connected to the SD_MODE input -+ of the DAC (default GPIO4 if parameter omitted). -+ -+ - Name: mbed-dac - Info: Configures the mbed AudioCODEC (TLV320AIC23B) - Load: dtoverlay=mbed-dac ---- /dev/null -+++ b/arch/arm/boot/dts/overlays/max98357a-overlay.dts -@@ -0,0 +1,84 @@ -+// Overlay for Maxim MAX98357A audio DAC -+ -+// dtparams: -+// no-sdmode - SD_MODE pin not managed by driver. -+// sdmode-pin - Specify GPIO pin to which SD_MODE is connected (default 4). -+ -+/dts-v1/; -+/plugin/; -+ -+/ { -+ compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709"; -+ -+ /* Enable I2S */ -+ fragment@0 { -+ target = <&i2s>; -+ __overlay__ { -+ status = "okay"; -+ }; -+ }; -+ -+ /* DAC whose SD_MODE pin is managed by driver (via GPIO pin) */ -+ fragment@1 { -+ target-path = "/"; -+ __overlay__ { -+ max98357a_dac: max98357a { -+ compatible = "maxim,max98357a"; -+ #sound-dai-cells = <0>; -+ sdmode-gpios = <&gpio 4 0>; /* 2nd word overwritten by sdmode-pin parameter */ -+ status = "okay"; -+ }; -+ }; -+ }; -+ -+ /* DAC whose SD_MODE pin is not managed by driver */ -+ fragment@2 { -+ target-path = "/"; -+ __dormant__ { -+ max98357a_nsd: max98357a { -+ compatible = "maxim,max98357a"; -+ #sound-dai-cells = <0>; -+ status = "okay"; -+ }; -+ }; -+ }; -+ -+ /* Soundcard connecting I2S to DAC with SD_MODE */ -+ fragment@3 { -+ target = <&sound>; -+ __overlay__ { -+ compatible = "simple-audio-card"; -+ simple-audio-card,format = "i2s"; -+ simple-audio-card,name = "MAX98357A"; -+ status = "okay"; -+ simple-audio-card,cpu { -+ sound-dai = <&i2s>; -+ }; -+ simple-audio-card,codec { -+ sound-dai = <&max98357a_dac>; -+ }; -+ }; -+ }; -+ -+ /* Soundcard connecting I2S to DAC without SD_MODE */ -+ fragment@4 { -+ target = <&sound>; -+ __dormant__ { -+ compatible = "simple-audio-card"; -+ simple-audio-card,format = "i2s"; -+ simple-audio-card,name = "MAX98357A"; -+ status = "okay"; -+ simple-audio-card,cpu { -+ sound-dai = <&i2s>; -+ }; -+ simple-audio-card,codec { -+ sound-dai = <&max98357a_nsd>; -+ }; -+ }; -+ }; -+ -+ __overrides__ { -+ no-sdmode = <0>,"-1+2-3+4"; -+ sdmode-pin = <&max98357a_dac>,"sdmode-gpios:4"; -+ }; -+}; |